지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
오류제보하기
In this paper, we propose a hearing impairment simulator considering reduced frequency selectivity of the hearing impaired, and verify it's performance through experiments. The reduced frequency selectivity was embodied by spectral smearing using linear prediction coding(LPC). The experiments are composed of 4 kinds of tests; pure tone test, speech reception threshold(SRT) test, and word recognition score(WRS) test without spectral smearing and with spectral smearing. The experiments of the hearing impairment simulator were performed with 9 subjects who have normal hearing. The amount of spectral smearing was controlled by LPC order. The percentile score of WRS test without smearing is 89.78±2.420%. The scores of WRS with 24th LPC order and with 8th LPC order are 88.00±3.556% and 83.78±2.123% respectively. It is verified that WRS score is lowered by decreasing LPC order. This is a reasonable result considering that spectral smearing is getting heavier according to decreasing LPC order. It is confirmed that spectral smearing using LPC simulates the reduced frequency selectivity of the hearing impaired and affects the clearness of speech reception.
목차
등록된 정보가 없습니다.
참고문헌 (11)
참고문헌 신청
DM Chabries / 1995 / Application of a human auditory model to loudness perception and hearing compensation / Proc. IEEE ICASSP : 3527 ~ 3530
Glasberg BR / 1986 / Auditory filter shapes in subjects with unilateral and bilateral cochlear impairments / J Acoust. Soc. Am 79 : 1020 ~ 1033
Moore BCJ / 1996 / Factors influencing loudness perception in people with cochlear hearing loss / Speech and Hearing Aids
Moore BCJ / 2002 / Detection of frequency modulation by hearing-impaired listeners: Effects of carrier frequency, modulation rate, and added amplitude modulation / J. Acoust.
Moore, BCJ / 1983 / Glasberg B, R. “Suggested formulae for calculating auditory filter Bandwidth and excitation patterns / J . Acoust. Soc. Am 74 : 750 ~ 753
Glasberg BR / 1986 / Auditory filter shapes in subjects with unilateral and bilateral cochlear impairments / J Acoust. Soc. Am 79 : 1020 ~ 1033
Moore BCJ / 1996 / Factors influencing loudness perception in people with cochlear hearing loss / Speech and Hearing Aids
Moore BCJ / 2002 / Detection of frequency modulation by hearing-impaired listeners: Effects of carrier frequency, modulation rate, and added amplitude modulation / J. Acoust.
Moore, BCJ / 1983 / Glasberg B, R. “Suggested formulae for calculating auditory filter Bandwidth and excitation patterns / J . Acoust. Soc. Am 74 : 750 ~ 753
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